<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    div{
      display: flex;
      display: inline-flex;
      flex-direction: row;
      flex-direction: row-reverse;
      flex-direction: column;
      flex-direction: column-reverse;
      flex-wrap: nowrap;
      flex-wrap: wrap;
      flex-wrap: wrap-reverse;
      flex-flow: row wrap;
      justify-content: flex-start;
      justify-content: flex-end;
      justify-content: center;
      justify-content: space-around;
      justify-content: space-between;
      justify-content: space-evenly;
       /*默认值*/
       align-items: stretch;
      align-items: flex-start;
      align-items: flex-end;
      align-items: center;
      align-items: baseline;
      /*默认值*/
      align-content: stretch;
      align-content: flex-start;
      align-content: flex-end;
      align-content: center;
      


    }
  </style>
</head>
<body>
  <!--display:flex dispaly:inline-flex-->
  
  <div></div>
</body>
</html>